I have a client who has had intermittent trouble sending and receiving emails. This morning I responded to one of his emails, and the response came back to me with the following error:
The following addresses had permanent fatal errors --- <email address> reason: 550 IP address is listed on uce-dnsbl1.rbl.spamrl.com.
Please organise removal and retry.
How can I deal with this on his behalf? I checked his IP address at www.spamrl.com/lookup
, and the results were mixed and "not blacklisted".
But if they show up just one time as being blocked on the entire list, it's enough to cause trouble ... So either there is something wrong on their network/server or it's the ISP or it's the local (sender's) SPAM solution...